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If the total product formed is 52 grams and one reactant was 27 grams what was the other reactant?

Answer and explanation

Correct answer: 25 grams

This question applies the law of conservation of mass: in a chemical reaction, the total mass of the reactants equals the total mass of the products, assuming no material escapes or enters the system. Therefore, if the product mass is 52 g and one reactant contributes 27 g, let the unknown reactant be x. Then x + 27 = 52, so x = 52 − 27 = 25 g. Thus, option D is correct. Option A merely repeats the known reactant mass, option B gives the entire product mass rather than the missing part, and option C results from an incorrect subtraction.

Related tags

ChemistryLaws-Of-Chemical-CombinationMass-ConservationLaws Of Chemical CombinationSome Basic Concepts Of ChemistryClass 11 Mcq

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